PCA

MonkmanMH · Feb 11, 2019 · 04899a6 · 04899a6
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diff --git a/10_data_sources.rmd b/10_data_sources.rmd
@@ -43,6 +43,11 @@ Simon Fraser University Library: [Gender, Sexuality & Women's Studies Informatio
 [Gapminder](https://www.gapminder.org/data/) - all indicators displayed in Gapminder World
 
 
+<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">Anyone know of a good migration dataset? Ideally # of people moving from country i to country j by year</p>&mdash; Savage Jim (@jim_savage_) <a href="https://twitter.com/jim_savage_/status/1094672164928802816?ref_src=twsrc%5Etfw">February 10, 2019</a></blockquote>
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 ### R packages
 
 

diff --git a/59_quantitative_methods.Rmd b/59_quantitative_methods.Rmd
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 ## Machine Learning
 
 
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+## Principal Component Analysis (PCA)
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+<blockquote class="twitter-tweet" data-lang="en"><p lang="en" dir="ltr">New Video!<br>PCA (Principal Component Analysis), enjoy and share if you like it!<a href="https://t.co/9jvOIE4xAh">https://t.co/9jvOIE4xAh</a></p>&mdash; Luis G. Serrano (@luis_likes_math) <a href="https://twitter.com/luis_likes_math/status/1094479228035313664?ref_src=twsrc%5Etfw">February 10, 2019</a></blockquote>
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 ## Random walk
 
 From wikipedia entry on [random walk](https://en.wikipedia.org/wiki/Random_walk):